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<?php |
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namespace Scriptotek\GoogleBooks; |
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class Volume extends Model |
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{ |
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protected static $coverSizes = [ |
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"extraLarge", |
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"large", |
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"medium", |
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"small", |
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"thumbnail", |
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"smallThumbnail", |
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]; |
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/** |
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* Provide a shortcut to data in 'volumeInfo', so we can do `$volume->title` |
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* instead of `$volume->volumeInfo->title`. |
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* |
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* @param string $key |
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* @return mixed |
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*/ |
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public function __get($key) |
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{ |
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return $this->get("volumeInfo.$key") ?: $this->get($key); |
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} |
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/** |
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* Returns cover of size $preferredSize or smaller if a cover of size $preferredSize does not exist. |
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* |
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* @param string $preferredSize |
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* @return mixed|null |
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*/ |
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public function getCover($preferredSize='extraLarge') |
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{ |
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$url = null; |
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if (!$this->has('volumeInfo.imageLinks')) { |
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return null; |
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} |
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if ($this->isSearchResult() && !in_array($preferredSize, ['thumbnail', 'smallThumbnail'])) { |
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// If we only have the brief record we got from search results, we should fetch the full one. |
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$this->expandToFullRecord(); |
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} |
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$idx = array_search($preferredSize, self::$coverSizes); |
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if ($idx === false) { |
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throw new \InvalidArgumentException('Invalid size: ' . $preferredSize); |
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} |
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foreach (self::$coverSizes as $n => $size) { |
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if ($n >= $idx && $this->has("volumeInfo.imageLinks.{$size}")) { |
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$url = $this->get("volumeInfo.imageLinks.{$size}"); |
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break; |
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} |
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} |
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return $this->removeCoverEdge($url); |
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} |
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/** |
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* Modify the URL to remove the cover edge. |
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* |
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* @param string $url |
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* @return string |
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*/ |
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protected function removeCoverEdge($url) { |
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if (is_null($url)) { |
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return null; |
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} |
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return str_replace('&edge=curl', '&edge=none', $url); |
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} |
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} |
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scriptotek /
php-google-books
